Devchannel Team / X_NUCLEO_IDB0XA1

HW layer for the Nucleo board, it only work with old BLE_API

Dependents:   Hello_BLE F446RE-BLE

Fork of X_NUCLEO_IDB0XA1 by ST

BlueNRGDevice.cpp@120:554a95afbd16, 2015-09-09 (annotated)

Committer:
Wolfgang Betz
Date:
Wed Sep 09 13:57:23 2015 +0200
Revision:
120:554a95afbd16
Parent:
119:19128d9d254f
Parent:
110:1232b39de5cc 
Merge branch 'master' of hg::http://wobetz@developer.mbed.org/teams/ST-Expansion-SW-Team/code/X_NUCLEO_IDB0XA1 into idb0xa1-split

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Silvio Lucio Oliva 70:d20d30f59b1c 1 /* mbed Microcontroller Library
Silvio Lucio Oliva 70:d20d30f59b1c 2 * Copyright (c) 2006-2013 ARM Limited
Silvio Lucio Oliva 70:d20d30f59b1c 3 *
Silvio Lucio Oliva 70:d20d30f59b1c 4 * Licensed under the Apache License, Version 2.0 (the "License");
Silvio Lucio Oliva 70:d20d30f59b1c 5 * you may not use this file except in compliance with the License.
Silvio Lucio Oliva 70:d20d30f59b1c 6 * You may obtain a copy of the License at
Silvio Lucio Oliva 70:d20d30f59b1c 7 *
Silvio Lucio Oliva 70:d20d30f59b1c 8 * http://www.apache.org/licenses/LICENSE-2.0
Silvio Lucio Oliva 70:d20d30f59b1c 9 *
Silvio Lucio Oliva 70:d20d30f59b1c 10 * Unless required by applicable law or agreed to in writing, software
Silvio Lucio Oliva 70:d20d30f59b1c 11 * distributed under the License is distributed on an "AS IS" BASIS,
Silvio Lucio Oliva 70:d20d30f59b1c 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
Silvio Lucio Oliva 70:d20d30f59b1c 13 * See the License for the specific language governing permissions and
Silvio Lucio Oliva 70:d20d30f59b1c 14 * limitations under the License.
Silvio Lucio Oliva 70:d20d30f59b1c 15 */
Silvio Lucio Oliva 70:d20d30f59b1c 16
Silvio Lucio Oliva 70:d20d30f59b1c 17 /**
Silvio Lucio Oliva 70:d20d30f59b1c 18 ******************************************************************************
apalmieri 95:e1f7ce04e71b 19 * @file BlueNRGDevice.cpp
Silvio Lucio Oliva 70:d20d30f59b1c 20 * @author STMicroelectronics
Silvio Lucio Oliva 70:d20d30f59b1c 21 * @brief Implementation of BLEDeviceInstanceBase
Silvio Lucio Oliva 70:d20d30f59b1c 22 ******************************************************************************
Silvio Lucio Oliva 70:d20d30f59b1c 23 * @copy
Silvio Lucio Oliva 70:d20d30f59b1c 24 *
Silvio Lucio Oliva 70:d20d30f59b1c 25 * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
Silvio Lucio Oliva 70:d20d30f59b1c 26 * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
Silvio Lucio Oliva 70:d20d30f59b1c 27 * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
Silvio Lucio Oliva 70:d20d30f59b1c 28 * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
Silvio Lucio Oliva 70:d20d30f59b1c 29 * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
Silvio Lucio Oliva 70:d20d30f59b1c 30 * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
Silvio Lucio Oliva 70:d20d30f59b1c 31 *
Silvio Lucio Oliva 70:d20d30f59b1c 32 * <h2><center>&copy; COPYRIGHT 2013 STMicroelectronics</center></h2>
apalmieri 95:e1f7ce04e71b 33 */
apalmieri 95:e1f7ce04e71b 34
Silvio Lucio Oliva 70:d20d30f59b1c 35 /** @defgroup BlueNRGDevice
Silvio Lucio Oliva 70:d20d30f59b1c 36 * @brief BlueNRG BLE_API Device Adaptation
Silvio Lucio Oliva 70:d20d30f59b1c 37 * @{
Silvio Lucio Oliva 70:d20d30f59b1c 38 */
apalmieri 95:e1f7ce04e71b 39
Silvio Lucio Oliva 70:d20d30f59b1c 40 #include "mbed.h"
Silvio Lucio Oliva 70:d20d30f59b1c 41 #include "BlueNRGDevice.h"
Silvio Lucio Oliva 70:d20d30f59b1c 42 #include "BlueNRGGap.h"
Silvio Lucio Oliva 70:d20d30f59b1c 43 #include "BlueNRGGattServer.h"
Silvio Lucio Oliva 70:d20d30f59b1c 44
Silvio Lucio Oliva 70:d20d30f59b1c 45 #include "btle.h"
Silvio Lucio Oliva 70:d20d30f59b1c 46 #include "Utils.h"
Silvio Lucio Oliva 70:d20d30f59b1c 47 #include "osal.h"
Silvio Lucio Oliva 70:d20d30f59b1c 48
apalmieri 107:5cc5ac5bfbbb 49 #include "debug.h"
apalmieri 107:5cc5ac5bfbbb 50 #include "stm32_bluenrg_ble.h"
apalmieri 107:5cc5ac5bfbbb 51
Antonio Vilei 74:c4526f8284d5 52 extern "C" {
apalmieri 95:e1f7ce04e71b 53 #include "hci.h"
Antonio Vilei 74:c4526f8284d5 54 }
Antonio Vilei 74:c4526f8284d5 55
Antonio Vilei 74:c4526f8284d5 56 #define HEADER_SIZE 5
Antonio Vilei 74:c4526f8284d5 57 #define MAX_BUFFER_SIZE 255
Antonio Vilei 74:c4526f8284d5 58
Silvio Lucio Oliva 70:d20d30f59b1c 59 /**
Wolfgang Betz 116:1aa0d2da72e4 60 * The singleton which represents the BlueNRG transport for the BLEDevice.
Wolfgang Betz 116:1aa0d2da72e4 61 *
Wolfgang Betz 116:1aa0d2da72e4 62 * See file 'x_nucleo_idb0xa1_targets.h' for details regarding the peripheral pins used!
Wolfgang Betz 116:1aa0d2da72e4 63 */
apalmieri 110:1232b39de5cc 64 #include "x_nucleo_idb0xa1_targets.h"
apalmieri 110:1232b39de5cc 65
apalmieri 110:1232b39de5cc 66 BlueNRGDevice bluenrgDeviceInstance(IDB0XA1_PIN_SPI_MOSI,
apalmieri 110:1232b39de5cc 67 IDB0XA1_PIN_SPI_MISO,
apalmieri 110:1232b39de5cc 68 IDB0XA1_PIN_SPI_SCK,
apalmieri 110:1232b39de5cc 69 IDB0XA1_PIN_SPI_nCS,
apalmieri 110:1232b39de5cc 70 IDB0XA1_PIN_SPI_RESET,
apalmieri 110:1232b39de5cc 71 IDB0XA1_PIN_SPI_IRQ);
Silvio Lucio Oliva 70:d20d30f59b1c 72
Silvio Lucio Oliva 70:d20d30f59b1c 73 /**
Silvio Lucio Oliva 70:d20d30f59b1c 74 * BLE-API requires an implementation of the following function in order to
Silvio Lucio Oliva 70:d20d30f59b1c 75 * obtain its transport handle.
Silvio Lucio Oliva 70:d20d30f59b1c 76 */
Andrea Palmieri 77:332b416123b4 77 BLEInstanceBase *
Andrea Palmieri 77:332b416123b4 78 createBLEInstance(void)
Silvio Lucio Oliva 70:d20d30f59b1c 79 {
Antonio Vilei 74:c4526f8284d5 80 return (&bluenrgDeviceInstance);
Silvio Lucio Oliva 70:d20d30f59b1c 81 }
Silvio Lucio Oliva 70:d20d30f59b1c 82
Silvio Lucio Oliva 70:d20d30f59b1c 83 /**************************************************************************/
Silvio Lucio Oliva 70:d20d30f59b1c 84 /**
Silvio Lucio Oliva 70:d20d30f59b1c 85 @brief Constructor
avilei 86:81b17a629630 86 * @param mosi mbed pin to use for MOSI line of SPI interface
avilei 86:81b17a629630 87 * @param miso mbed pin to use for MISO line of SPI interface
avilei 86:81b17a629630 88 * @param sck mbed pin to use for SCK line of SPI interface
avilei 86:81b17a629630 89 * @param cs mbed pin to use for not chip select line of SPI interface
avilei 86:81b17a629630 90 * @param rst mbed pin to use for BlueNRG reset
Antonio Vilei 74:c4526f8284d5 91 * @param irq mbed pin for BlueNRG IRQ
Silvio Lucio Oliva 70:d20d30f59b1c 92 */
Silvio Lucio Oliva 70:d20d30f59b1c 93 /**************************************************************************/
Antonio Vilei 74:c4526f8284d5 94 BlueNRGDevice::BlueNRGDevice(PinName mosi,
Antonio Vilei 74:c4526f8284d5 95 PinName miso,
Antonio Vilei 74:c4526f8284d5 96 PinName sck,
Antonio Vilei 74:c4526f8284d5 97 PinName cs,
Antonio Vilei 74:c4526f8284d5 98 PinName rst,
Antonio Vilei 74:c4526f8284d5 99 PinName irq) : spi_(mosi, miso, sck), nCS_(cs), rst_(rst), irq_(irq)
Silvio Lucio Oliva 70:d20d30f59b1c 100 {
Silvio Lucio Oliva 70:d20d30f59b1c 101 isInitialized = false;
apalmieri 95:e1f7ce04e71b 102
Antonio Vilei 74:c4526f8284d5 103 // Setup the spi for 8 bit data, low clock polarity,
Antonio Vilei 74:c4526f8284d5 104 // 1-edge phase, with an 8MHz clock rate
Antonio Vilei 74:c4526f8284d5 105 spi_.format(8, 0);
Antonio Vilei 74:c4526f8284d5 106 spi_.frequency(8000000);
apalmieri 95:e1f7ce04e71b 107
Antonio Vilei 74:c4526f8284d5 108 // Deselect the BlueNRG chip by keeping its nCS signal high
Antonio Vilei 74:c4526f8284d5 109 nCS_ = 1;
Antonio Vilei 74:c4526f8284d5 110
Antonio Vilei 74:c4526f8284d5 111 wait_us(500);
Silvio Lucio Oliva 70:d20d30f59b1c 112 }
Silvio Lucio Oliva 70:d20d30f59b1c 113
Silvio Lucio Oliva 70:d20d30f59b1c 114 /**************************************************************************/
Silvio Lucio Oliva 70:d20d30f59b1c 115 /**
Silvio Lucio Oliva 70:d20d30f59b1c 116 @brief Destructor
Silvio Lucio Oliva 70:d20d30f59b1c 117 */
Silvio Lucio Oliva 70:d20d30f59b1c 118 /**************************************************************************/
Silvio Lucio Oliva 70:d20d30f59b1c 119 BlueNRGDevice::~BlueNRGDevice(void)
Silvio Lucio Oliva 70:d20d30f59b1c 120 {
Silvio Lucio Oliva 70:d20d30f59b1c 121 }
Silvio Lucio Oliva 70:d20d30f59b1c 122
Silvio Lucio Oliva 70:d20d30f59b1c 123
Silvio Lucio Oliva 70:d20d30f59b1c 124 /**
Silvio Lucio Oliva 70:d20d30f59b1c 125 @brief Initialises anything required to start using BLE
Silvio Lucio Oliva 70:d20d30f59b1c 126 @param[in] void
Silvio Lucio Oliva 70:d20d30f59b1c 127 @returns ble_error_t
Silvio Lucio Oliva 70:d20d30f59b1c 128 */
Silvio Lucio Oliva 70:d20d30f59b1c 129 ble_error_t BlueNRGDevice::init(void)
Silvio Lucio Oliva 70:d20d30f59b1c 130 {
Wolfgang Betz 116:1aa0d2da72e4 131 // Set the interrupt handler for the device
apalmieri 110:1232b39de5cc 132 irq_.mode(PullNone); // betzw: set irq mode
Wolfgang Betz 116:1aa0d2da72e4 133 irq_.rise(&HCI_Isr);
Antonio Vilei 74:c4526f8284d5 134
Wolfgang Betz 116:1aa0d2da72e4 135 /* ToDo: Clear memory contents, reset the SD, etc. */
Wolfgang Betz 116:1aa0d2da72e4 136 btle_init(BlueNRGGap::getInstance().getIsSetAddress());
apalmieri 95:e1f7ce04e71b 137
Wolfgang Betz 116:1aa0d2da72e4 138 isInitialized = true;
Silvio Lucio Oliva 70:d20d30f59b1c 139
Wolfgang Betz 116:1aa0d2da72e4 140 return BLE_ERROR_NONE;
Silvio Lucio Oliva 70:d20d30f59b1c 141 }
Silvio Lucio Oliva 70:d20d30f59b1c 142
Silvio Lucio Oliva 70:d20d30f59b1c 143
Silvio Lucio Oliva 70:d20d30f59b1c 144 /**
Silvio Lucio Oliva 70:d20d30f59b1c 145 @brief Resets the BLE HW, removing any existing services and
Silvio Lucio Oliva 70:d20d30f59b1c 146 characteristics
Silvio Lucio Oliva 70:d20d30f59b1c 147 @param[in] void
Silvio Lucio Oliva 70:d20d30f59b1c 148 @returns ble_error_t
Silvio Lucio Oliva 70:d20d30f59b1c 149 */
Silvio Lucio Oliva 70:d20d30f59b1c 150 ble_error_t BlueNRGDevice::reset(void)
Silvio Lucio Oliva 70:d20d30f59b1c 151 {
Antonio Vilei 74:c4526f8284d5 152 wait_us(500);
Silvio Lucio Oliva 70:d20d30f59b1c 153
Silvio Lucio Oliva 70:d20d30f59b1c 154 /* Reset BlueNRG SPI interface */
apalmieri 95:e1f7ce04e71b 155 rst_ = 0;
apalmieri 95:e1f7ce04e71b 156 wait_us(5);
apalmieri 95:e1f7ce04e71b 157 rst_ = 1;
apalmieri 95:e1f7ce04e71b 158 wait_us(5);
Silvio Lucio Oliva 70:d20d30f59b1c 159
Silvio Lucio Oliva 70:d20d30f59b1c 160 /* Wait for the radio to come back up */
Antonio Vilei 74:c4526f8284d5 161 wait_us(500);
Silvio Lucio Oliva 70:d20d30f59b1c 162
Silvio Lucio Oliva 70:d20d30f59b1c 163 isInitialized = false;
Silvio Lucio Oliva 70:d20d30f59b1c 164
Silvio Lucio Oliva 70:d20d30f59b1c 165 return BLE_ERROR_NONE;
Silvio Lucio Oliva 70:d20d30f59b1c 166 }
Silvio Lucio Oliva 70:d20d30f59b1c 167
Silvio Lucio Oliva 70:d20d30f59b1c 168
Silvio Lucio Oliva 70:d20d30f59b1c 169 /*!
Wolfgang Betz 116:1aa0d2da72e4 170 @brief Wait for any BLE Event like BLE Connection, Read Request etc.
Wolfgang Betz 116:1aa0d2da72e4 171 @param[in] void
Wolfgang Betz 116:1aa0d2da72e4 172 @returns char *
Silvio Lucio Oliva 70:d20d30f59b1c 173 */
Silvio Lucio Oliva 70:d20d30f59b1c 174 void BlueNRGDevice::waitForEvent(void)
Silvio Lucio Oliva 70:d20d30f59b1c 175 {
apalmieri 110:1232b39de5cc 176 bool must_return = false;
apalmieri 110:1232b39de5cc 177
apalmieri 110:1232b39de5cc 178 do {
apalmieri 110:1232b39de5cc 179 BlueNRGGap::getInstance().Process();
apalmieri 110:1232b39de5cc 180
apalmieri 110:1232b39de5cc 181 HCI_Process();
apalmieri 110:1232b39de5cc 182
apalmieri 110:1232b39de5cc 183 if(must_return) return;
apalmieri 110:1232b39de5cc 184
apalmieri 110:1232b39de5cc 185 __WFE(); /* it is recommended that SEVONPEND in the
apalmieri 110:1232b39de5cc 186 System Control Register is NOT set */
apalmieri 110:1232b39de5cc 187 must_return = true; /* after returning from WFE we must guarantee
apalmieri 110:1232b39de5cc 188 that conrol is given back to main loop before next WFE */
apalmieri 110:1232b39de5cc 189 } while(true);
Wolfgang Betz 119:19128d9d254f 190
Silvio Lucio Oliva 70:d20d30f59b1c 191 }
Wolfgang Betz 115:3b47df81a56b 192
Wolfgang Betz 115:3b47df81a56b 193
Silvio Lucio Oliva 70:d20d30f59b1c 194 /*!
Silvio Lucio Oliva 70:d20d30f59b1c 195 @brief get GAP version
Silvio Lucio Oliva 70:d20d30f59b1c 196 @param[in] void
Silvio Lucio Oliva 70:d20d30f59b1c 197 @returns char *
Silvio Lucio Oliva 70:d20d30f59b1c 198 */
Silvio Lucio Oliva 70:d20d30f59b1c 199 const char *BlueNRGDevice::getVersion(void)
Silvio Lucio Oliva 70:d20d30f59b1c 200 {
Silvio Lucio Oliva 70:d20d30f59b1c 201 char *version = new char[6];
Silvio Lucio Oliva 70:d20d30f59b1c 202 memcpy((void *)version, "1.0.0", 5);
Silvio Lucio Oliva 70:d20d30f59b1c 203 return version;
Silvio Lucio Oliva 70:d20d30f59b1c 204 }
Silvio Lucio Oliva 70:d20d30f59b1c 205
Silvio Lucio Oliva 70:d20d30f59b1c 206 /**************************************************************************/
Silvio Lucio Oliva 70:d20d30f59b1c 207 /*!
Silvio Lucio Oliva 70:d20d30f59b1c 208 @brief get init state
Silvio Lucio Oliva 70:d20d30f59b1c 209 @param[in] void
apalmieri 95:e1f7ce04e71b 210 @returns bool
Silvio Lucio Oliva 70:d20d30f59b1c 211 */
Silvio Lucio Oliva 70:d20d30f59b1c 212 /**************************************************************************/
Silvio Lucio Oliva 70:d20d30f59b1c 213 bool BlueNRGDevice::getIsInitialized(void)
Silvio Lucio Oliva 70:d20d30f59b1c 214 {
Silvio Lucio Oliva 70:d20d30f59b1c 215 return isInitialized;
Silvio Lucio Oliva 70:d20d30f59b1c 216 }
Silvio Lucio Oliva 70:d20d30f59b1c 217
Silvio Lucio Oliva 70:d20d30f59b1c 218 /**************************************************************************/
Silvio Lucio Oliva 70:d20d30f59b1c 219 /*!
Silvio Lucio Oliva 70:d20d30f59b1c 220 @brief get reference to GAP object
Silvio Lucio Oliva 70:d20d30f59b1c 221 @param[in] void
apalmieri 95:e1f7ce04e71b 222 @returns Gap&
Silvio Lucio Oliva 70:d20d30f59b1c 223 */
Silvio Lucio Oliva 70:d20d30f59b1c 224 /**************************************************************************/
Silvio Lucio Oliva 70:d20d30f59b1c 225 Gap &BlueNRGDevice::getGap()
Silvio Lucio Oliva 70:d20d30f59b1c 226 {
Silvio Lucio Oliva 70:d20d30f59b1c 227 return BlueNRGGap::getInstance();
Silvio Lucio Oliva 70:d20d30f59b1c 228 }
Silvio Lucio Oliva 70:d20d30f59b1c 229
Andrea Palmieri 77:332b416123b4 230 const Gap &BlueNRGDevice::getGap() const
Andrea Palmieri 77:332b416123b4 231 {
Andrea Palmieri 77:332b416123b4 232 return BlueNRGGap::getInstance();
Andrea Palmieri 77:332b416123b4 233 }
Andrea Palmieri 77:332b416123b4 234
Silvio Lucio Oliva 70:d20d30f59b1c 235 /**************************************************************************/
Silvio Lucio Oliva 70:d20d30f59b1c 236 /*!
Silvio Lucio Oliva 70:d20d30f59b1c 237 @brief get reference to GATT server object
Silvio Lucio Oliva 70:d20d30f59b1c 238 @param[in] void
apalmieri 95:e1f7ce04e71b 239 @returns GattServer&
Silvio Lucio Oliva 70:d20d30f59b1c 240 */
Silvio Lucio Oliva 70:d20d30f59b1c 241 /**************************************************************************/
Silvio Lucio Oliva 70:d20d30f59b1c 242 GattServer &BlueNRGDevice::getGattServer()
Silvio Lucio Oliva 70:d20d30f59b1c 243 {
Silvio Lucio Oliva 70:d20d30f59b1c 244 return BlueNRGGattServer::getInstance();
Silvio Lucio Oliva 70:d20d30f59b1c 245 }
Silvio Lucio Oliva 70:d20d30f59b1c 246
Andrea Palmieri 77:332b416123b4 247 const GattServer &BlueNRGDevice::getGattServer() const
Silvio Lucio Oliva 70:d20d30f59b1c 248 {
Andrea Palmieri 77:332b416123b4 249 return BlueNRGGattServer::getInstance();
Silvio Lucio Oliva 70:d20d30f59b1c 250 }
apalmieri 110:1232b39de5cc 251
Silvio Lucio Oliva 70:d20d30f59b1c 252 /**************************************************************************/
Silvio Lucio Oliva 70:d20d30f59b1c 253 /*!
Silvio Lucio Oliva 70:d20d30f59b1c 254 @brief shut down the the BLE device
Silvio Lucio Oliva 70:d20d30f59b1c 255 @param[out] error if any
Silvio Lucio Oliva 70:d20d30f59b1c 256 */
Silvio Lucio Oliva 70:d20d30f59b1c 257 /**************************************************************************/
Silvio Lucio Oliva 70:d20d30f59b1c 258 ble_error_t BlueNRGDevice::shutdown(void) {
Silvio Lucio Oliva 70:d20d30f59b1c 259 return reset();
Silvio Lucio Oliva 70:d20d30f59b1c 260 }
apalmieri 95:e1f7ce04e71b 261
Antonio Vilei 74:c4526f8284d5 262 /**
Antonio Vilei 74:c4526f8284d5 263 * @brief Reads from BlueNRG SPI buffer and store data into local buffer.
Antonio Vilei 74:c4526f8284d5 264 * @param buffer : Buffer where data from SPI are stored
Antonio Vilei 74:c4526f8284d5 265 * @param buff_size: Buffer size
Antonio Vilei 74:c4526f8284d5 266 * @retval int32_t : Number of read bytes
Antonio Vilei 74:c4526f8284d5 267 */
Antonio Vilei 74:c4526f8284d5 268 int32_t BlueNRGDevice::spiRead(uint8_t *buffer, uint8_t buff_size)
Antonio Vilei 74:c4526f8284d5 269 {
apalmieri 95:e1f7ce04e71b 270 uint16_t byte_count;
apalmieri 95:e1f7ce04e71b 271 uint8_t len = 0;
apalmieri 95:e1f7ce04e71b 272 uint8_t char_ff = 0xff;
apalmieri 95:e1f7ce04e71b 273 volatile uint8_t read_char;
apalmieri 95:e1f7ce04e71b 274
apalmieri 95:e1f7ce04e71b 275 uint8_t i = 0;
apalmieri 95:e1f7ce04e71b 276 volatile uint8_t tmpreg;
Antonio Vilei 74:c4526f8284d5 277
apalmieri 95:e1f7ce04e71b 278 uint8_t header_master[HEADER_SIZE] = {0x0b, 0x00, 0x00, 0x00, 0x00};
apalmieri 95:e1f7ce04e71b 279 uint8_t header_slave[HEADER_SIZE];
Antonio Vilei 74:c4526f8284d5 280
apalmieri 95:e1f7ce04e71b 281 /* Select the chip */
apalmieri 95:e1f7ce04e71b 282 nCS_ = 0;
apalmieri 95:e1f7ce04e71b 283
apalmieri 95:e1f7ce04e71b 284 /* Read the header */
apalmieri 95:e1f7ce04e71b 285 for (i = 0; i < 5; i++)
apalmieri 95:e1f7ce04e71b 286 {
apalmieri 95:e1f7ce04e71b 287 tmpreg = spi_.write(header_master[i]);
apalmieri 95:e1f7ce04e71b 288 header_slave[i] = (uint8_t)(tmpreg);
apalmieri 95:e1f7ce04e71b 289 }
apalmieri 95:e1f7ce04e71b 290
apalmieri 95:e1f7ce04e71b 291 if (header_slave[0] == 0x02) {
apalmieri 95:e1f7ce04e71b 292 /* device is ready */
apalmieri 95:e1f7ce04e71b 293 byte_count = (header_slave[4]<<8)|header_slave[3];
apalmieri 95:e1f7ce04e71b 294
apalmieri 95:e1f7ce04e71b 295 if (byte_count > 0) {
apalmieri 95:e1f7ce04e71b 296
apalmieri 95:e1f7ce04e71b 297 /* avoid to read more data that size of the buffer */
apalmieri 95:e1f7ce04e71b 298 if (byte_count > buff_size){
apalmieri 95:e1f7ce04e71b 299 byte_count = buff_size;
apalmieri 95:e1f7ce04e71b 300 }
apalmieri 95:e1f7ce04e71b 301
apalmieri 95:e1f7ce04e71b 302 for (len = 0; len < byte_count; len++){
apalmieri 95:e1f7ce04e71b 303 read_char = spi_.write(char_ff);
apalmieri 95:e1f7ce04e71b 304 buffer[len] = read_char;
apalmieri 95:e1f7ce04e71b 305 }
apalmieri 95:e1f7ce04e71b 306 }
apalmieri 95:e1f7ce04e71b 307 }
apalmieri 95:e1f7ce04e71b 308 /* Release CS line to deselect the chip */
apalmieri 95:e1f7ce04e71b 309 nCS_ = 1;
apalmieri 95:e1f7ce04e71b 310
apalmieri 95:e1f7ce04e71b 311 // Add a small delay to give time to the BlueNRG to set the IRQ pin low
apalmieri 95:e1f7ce04e71b 312 // to avoid a useless SPI read at the end of the transaction
apalmieri 95:e1f7ce04e71b 313 for(volatile int i = 0; i < 2; i++)__NOP();
apalmieri 95:e1f7ce04e71b 314
apalmieri 95:e1f7ce04e71b 315 #ifdef PRINT_CSV_FORMAT
apalmieri 95:e1f7ce04e71b 316 if (len > 0) {
apalmieri 107:5cc5ac5bfbbb 317 print_csv_time();
apalmieri 95:e1f7ce04e71b 318 for (int i=0; i<len; i++) {
apalmieri 95:e1f7ce04e71b 319 PRINT_CSV(" %02x", buffer[i]);
Wolfgang Betz 91:97c0c21046b4 320 }
apalmieri 95:e1f7ce04e71b 321 PRINT_CSV("\n");
apalmieri 95:e1f7ce04e71b 322 }
Antonio Vilei 74:c4526f8284d5 323 #endif
apalmieri 95:e1f7ce04e71b 324
apalmieri 95:e1f7ce04e71b 325 return len;
Antonio Vilei 74:c4526f8284d5 326 }
Antonio Vilei 74:c4526f8284d5 327
Antonio Vilei 74:c4526f8284d5 328 /**
Antonio Vilei 74:c4526f8284d5 329 * @brief Writes data from local buffer to SPI.
Antonio Vilei 74:c4526f8284d5 330 * @param data1 : First data buffer to be written
Antonio Vilei 74:c4526f8284d5 331 * @param data2 : Second data buffer to be written
Antonio Vilei 74:c4526f8284d5 332 * @param Nb_bytes1: Size of first data buffer to be written
Antonio Vilei 74:c4526f8284d5 333 * @param Nb_bytes2: Size of second data buffer to be written
Antonio Vilei 74:c4526f8284d5 334 * @retval Number of read bytes
Antonio Vilei 74:c4526f8284d5 335 */
Antonio Vilei 74:c4526f8284d5 336 int32_t BlueNRGDevice::spiWrite(uint8_t* data1,
Wolfgang Betz 116:1aa0d2da72e4 337 uint8_t* data2, uint8_t Nb_bytes1, uint8_t Nb_bytes2)
Antonio Vilei 74:c4526f8284d5 338 {
Wolfgang Betz 116:1aa0d2da72e4 339 int32_t result = 0;
Wolfgang Betz 116:1aa0d2da72e4 340 uint32_t i;
Wolfgang Betz 116:1aa0d2da72e4 341 volatile uint8_t tmpreg;
Wolfgang Betz 115:3b47df81a56b 342
apalmieri 95:e1f7ce04e71b 343 unsigned char header_master[HEADER_SIZE] = {0x0a, 0x00, 0x00, 0x00, 0x00};
apalmieri 95:e1f7ce04e71b 344 unsigned char header_slave[HEADER_SIZE] = {0xaa, 0x00, 0x00, 0x00, 0x00};
Wolfgang Betz 91:97c0c21046b4 345
apalmieri 95:e1f7ce04e71b 346 disable_irq();
Antonio Vilei 74:c4526f8284d5 347
apalmieri 95:e1f7ce04e71b 348 /* CS reset */
apalmieri 95:e1f7ce04e71b 349 nCS_ = 0;
Antonio Vilei 74:c4526f8284d5 350
apalmieri 95:e1f7ce04e71b 351 /* Exchange header */
apalmieri 95:e1f7ce04e71b 352 for (i = 0; i < 5; i++)
apalmieri 95:e1f7ce04e71b 353 {
apalmieri 95:e1f7ce04e71b 354 tmpreg = spi_.write(header_master[i]);
apalmieri 95:e1f7ce04e71b 355 header_slave[i] = tmpreg;
apalmieri 95:e1f7ce04e71b 356 }
apalmieri 95:e1f7ce04e71b 357
apalmieri 95:e1f7ce04e71b 358 if (header_slave[0] == 0x02) {
apalmieri 95:e1f7ce04e71b 359 /* SPI is ready */
apalmieri 95:e1f7ce04e71b 360 if (header_slave[1] >= (Nb_bytes1+Nb_bytes2)) {
apalmieri 95:e1f7ce04e71b 361
apalmieri 95:e1f7ce04e71b 362 /* Buffer is big enough */
apalmieri 95:e1f7ce04e71b 363 for (i = 0; i < Nb_bytes1; i++) {
apalmieri 110:1232b39de5cc 364 spi_.write(*(data1 + i));
apalmieri 95:e1f7ce04e71b 365 }
apalmieri 95:e1f7ce04e71b 366 for (i = 0; i < Nb_bytes2; i++) {
apalmieri 110:1232b39de5cc 367 spi_.write(*(data2 + i));
apalmieri 95:e1f7ce04e71b 368 }
Antonio Vilei 74:c4526f8284d5 369 } else {
apalmieri 95:e1f7ce04e71b 370 /* Buffer is too small */
apalmieri 95:e1f7ce04e71b 371 result = -2;
Antonio Vilei 74:c4526f8284d5 372 }
apalmieri 95:e1f7ce04e71b 373 } else {
apalmieri 95:e1f7ce04e71b 374 /* SPI is not ready */
apalmieri 95:e1f7ce04e71b 375 result = -1;
apalmieri 95:e1f7ce04e71b 376 }
Antonio Vilei 74:c4526f8284d5 377
apalmieri 95:e1f7ce04e71b 378 /* Release CS line */
apalmieri 95:e1f7ce04e71b 379 //HAL_GPIO_WritePin(BNRG_SPI_CS_PORT, BNRG_SPI_CS_PIN, GPIO_PIN_SET);
apalmieri 95:e1f7ce04e71b 380 nCS_ = 1;
apalmieri 95:e1f7ce04e71b 381
apalmieri 95:e1f7ce04e71b 382 enable_irq();
Antonio Vilei 74:c4526f8284d5 383
apalmieri 95:e1f7ce04e71b 384 return result;
Antonio Vilei 74:c4526f8284d5 385 }
Antonio Vilei 74:c4526f8284d5 386
Antonio Vilei 74:c4526f8284d5 387 bool BlueNRGDevice::dataPresent()
Antonio Vilei 74:c4526f8284d5 388 {
Antonio Vilei 74:c4526f8284d5 389 return (irq_ == 1);
Antonio Vilei 74:c4526f8284d5 390 }
Antonio Vilei 74:c4526f8284d5 391
Antonio Vilei 74:c4526f8284d5 392 void BlueNRGDevice::disable_irq()
Antonio Vilei 74:c4526f8284d5 393 {
Antonio Vilei 74:c4526f8284d5 394 irq_.disable_irq();
Antonio Vilei 74:c4526f8284d5 395 }
Antonio Vilei 74:c4526f8284d5 396
Antonio Vilei 74:c4526f8284d5 397 void BlueNRGDevice::enable_irq()
Antonio Vilei 74:c4526f8284d5 398 {
Antonio Vilei 74:c4526f8284d5 399 irq_.enable_irq();
Antonio Vilei 74:c4526f8284d5 400 }